NOAA and the American Meteorological Society released the State of the Climate in 2015 report on August 2, 2016. Scientists from NOAA's National Climatic Data Center led the report. Every year, the Climate.gov team creates highlights for State of the Climate report in consultation with the report’s editors and authors.
View State of the Climate 2015 highlights
The 2015 report, a 26-year tradition encompassing the work of 450 authors from 62 countries, uses dozens of climate indicators to track patterns, changes, and trends of the global climate system. These indicators often reflect many thousands of measurements from multiple independent data sets.
The report also details cases of unusual and extreme events, such as 2015 surpassing 2014 as the warmest year on record since at least eh mid-to-late 19th century resulting from both long-term global warming and one of the strongest el Niño events.